Laurentia

This is the fifth continent to form in earth. Laurentia formed 1.7-1.8 billion years ago, after the breakup of Columbia. Laurentia still exists however, currently it is defined as the western United States and Canada, where the Canada Shield is nearby. Laurentia is known for its fossils, mostly form the Late Proterozoic and the Cambrian and Ordovician Periods in the early Phanerozoic Eon. During the early years of Laurentia, it coincided with Rodinia.